The SHP Ford Block is tailored to the most popular performance and racing applications. 8.2" (302) or 9.5" (351) deck heights are available, as well as 4.000" or 4.125" siamesed cylinder bores, which can be safely bored to 4.185". The valley is machined to accept factory roller lifter guides and retainer (spider). The Ford SHP block is the perfect block for those looking to get more out of their motor than a stock block can provide.